Subsequent Events - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jan. 19, 2022	Mar. 11, 2021	Jul. 31, 2018
BARDA [Member]
Subsequent Event [Line Items]
Potential amount additional funding awarded		$ 12.9
Overall potential award increased		46.9
Potential contract amount awarded		$ 59.7		$ 44.2
At-The-Market Offering Program [Member]
Subsequent Event [Line Items]
Issuance of stock, shares	5,963,294
At-The-Market Offering Program [Member] | Cantor Fitzgerald & Co [Member] | Maximum [Member]
Subsequent Event [Line Items]
Common stock available for issuance			$ 75.0
Sales Agreement [Member]
Subsequent Event [Line Items]
Issuance of stock, shares	0